CN112476492A - Cutter with replaceable blade - Google Patents

Abstract

The invention provides a cutter with a replaceable blade, which comprises a shell, a slidable tool rest component arranged on the shell, a first blade arranged on the tool rest component, a blade bin used for placing the blade to be used, and a cutter changing button, wherein the cutter changing button is arranged on the shell, the tool rest component comprises a sliding button, a cutter rest and an elastic fixing piece used for fixing the first blade, the elastic fixing piece is fixed on the cutter rest, the tool rest component drives the first blade to move and extend out of one knife outlet of the shell to be exposed out of the shell, a triggering part is arranged on the elastic fixing piece, under the triggering of the cutter changing button, the triggering part moves to enable the elastic fixing piece to unlock the first blade, the cutter changing button comprises an operating part and a first matching part, the cutter bin is provided with a second matching part, the operating part enables the cutter changing button to slide towards the direction close to the cutter bin, and the first matching part is matched with the second, the operation part is operated to enable the tool changing button to slide towards the direction far away from the tool bin, and the first matching part is separated from the second matching part.

Description

Cutter with replaceable blade

Technical Field

The invention relates to a cutter, in particular to a cutter with a replaceable blade.

Background

For the cutter such as a utility knife which needs a thin blade, the blade is very easy to damage in the using process, and how to safely and quickly replace the blade is a problem to be solved. When the blade needs to be replaced, the blade replacing button is triggered to pull out the blade. The current blade button that trades includes blade lock and spring, and the blade lock includes multiple structures such as spring bolt, lock locking portion and push against portion, and the structure is complicated, and each subassembly of blade button is mostly injection molding, and is with high costs, the easy inefficacy. On the other hand, when the existing cutter is used, the cutter bin is easy to fall off from the cutter shell, and the safety is great.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides the cutter with more convenient blade addition or replacement and more stable structure, so as to overcome the defects of the prior art.

The technical scheme adopted by the invention for solving the problems in the prior art is as follows:

a cutter with replaceable blades comprises a shell, a slidable tool rest assembly arranged on the shell, a first blade arranged on the tool rest assembly and a tool bin used for placing the blade for standby, the cutter further comprises a tool changing button, the tool changing button is arranged on the shell, the tool rest assembly comprises a sliding button, a tool rest and an elastic fixing piece for fixing the first blade, the elastic fixing piece is fixed on the tool rest, the tool rest assembly drives the first blade to move and extend out of a tool outlet of the shell to be exposed outside the shell, a triggering portion is arranged on the elastic fixing piece, under the triggering of the tool changing button, the triggering portion moves to enable the elastic fixing piece to unlock the first blade, the tool changing button comprises an operating portion and a first matching portion, the tool bin is provided with a second matching portion, and the operating portion enables the tool changing button to slide towards the direction close to the tool bin, the first matching part is matched with the second matching part to fix the tool bin in the shell, the operation part is operated to enable the tool changing button to slide towards the direction far away from the tool bin, and the first matching part is separated from the second matching part.

Preferably, the tool changing button further comprises a base, the first matching portion is a first stopping portion extending from the base to the tool magazine, the second matching portion is a second stopping portion arranged on the inner wall of the tool magazine, and the first stopping portion abuts against the bottom of the second stopping portion.

Preferably, the first stopping portion is an integrated structure formed by extending from the base portion toward the tool magazine.

Preferably, the tool changing button comprises a base, the first matching portion is a clamping portion extending from the base to the tool bin, the second matching portion is a clamping groove formed in the tool bin, and an opening of the clamping groove faces the tool changing button.

Preferably, the clamping portion is an integrated structure formed by extending from the base portion towards the direction of the knife magazine.

Preferably, the tool changing button further comprises a protrusion extending from the base, the protrusion extends from the base to the elastic fixing member, and an extending end surface of the protrusion is a curved surface.

Preferably, the extending end of the protruding portion includes a fourth edge portion and a fifth edge portion, the fourth edge portion is closer to the exit edge than the fifth edge portion, the fifth edge portion extends from the fourth edge portion toward the base portion in an inclined manner, and a connection portion between the fourth edge portion and the fifth edge portion is in a smooth arc shape.

Preferably, the elastic fixing member includes a body portion, the trigger portion extends from the body portion toward the tool changing button, and an extending end surface of the trigger portion is a curved surface.

Preferably, the extending end of the trigger portion includes a first edge portion, a third edge portion and a second edge portion connecting the first edge portion and the third edge portion, the first edge portion is closer to the exit edge than the third edge portion, and a distance from the first edge portion to the base portion is smaller than a distance from the third edge portion to the base portion.

Preferably, the position of the tool changing button in the tool spans between one end of the tool magazine close to the knife outlet and the position of the elastic fixing piece when the tool changing button unlocks the first blade.

The invention has the beneficial effects that: the cutter with the replaceable blade comprises a cutter changing button fixed on the shell, the cutter changing button comprises an operating part exposed outside the shell, a protruding part and a first matching part, the cutter changing button is integrally formed, an elastic fixing part is fixed on the cutter rest, the first blade is fixed on the cutter rest component, the cutter rest component can drive the first blade to move in the shell, a triggering part is further formed on the elastic fixing part, the protruding part can be pressed against the triggering part through the operation of the operating part, the triggering part moves under the pressing of the protruding part, so that the first blade is separated from the cutter rest component, and at the moment, the first blade can be taken out; on the other hand, the tool magazine is provided with a second matching part, and the first matching part can be matched with or separated from the second matching part by operating the operation part, so that the tool magazine is locked or unlocked. Therefore, compared with the prior art, the tool changing device has the advantages that the tool changing button is used for controlling the unlocking of the first blade and the locking and unlocking of the tool bin, the structure is simple, the stability is good, and the cost is low.

Drawings

The above objects, technical solutions and advantages of the present invention can be achieved by the following drawings.

FIG. 1 is a schematic structural diagram of a cutter in the first embodiment.

Fig. 2 is an exploded perspective view of the tool shown in fig. 1.

Fig. 3 is a partial structural schematic view of the tool shown in fig. 2.

Fig. 4 is a partial structural schematic view of the tool shown in fig. 3.

Fig. 5 is a partial schematic view of another perspective of the tool shown in fig. 4.

Fig. 6 is a partial structural schematic view of the tool shown in fig. 5.

Fig. 7 is a schematic structural view of a tool changing button and an elastic fixing member of the tool shown in fig. 5.

FIG. 8 is a schematic view showing the structure of a cutter according to the second embodiment.

Fig. 9 is an exploded perspective view of the tool shown in fig. 8.

Fig. 10 is a partial structural schematic view of the tool shown in fig. 9.

Fig. 11 is a partial schematic view of another perspective of the tool shown in fig. 10.

Fig. 12 is a partial structural schematic view of the tool shown in fig. 11.

Fig. 13 is an exploded perspective view of the tool shown in fig. 12.

Detailed Description

The invention is described in further detail below with reference to the accompanying drawings of embodiments.

The first embodiment is as follows: as shown in fig. 1 to 7, the present invention provides a replaceable blade tool, which comprises a housing 10, a slidable carriage assembly 20 disposed in the housing 10, and a cartridge 30 for placing a blade 52 to be used, wherein the cartridge 30 is removably mounted in the housing 10. The cutter further comprises a cutter changing button 40, the cutter changing button 40 is fixed on the shell 10, the shell 10 comprises a first shell 11 and a second shell 12, and a first groove (not numbered in the figure) used for containing the cutter changing button 40 and enabling part of the cutter changing button to be exposed out of the first shell 11 is arranged on the first shell 11. The tool holder assembly 20 comprises a sliding button 21, a tool holder 22 and an elastic fixing piece 23 fixed on the tool holder 22, wherein the elastic fixing piece 23 is fixed on the tool holder 22 through a metal elastic sheet 234. The cutter contains a plurality of blades, the blades comprise a plurality of standby blades 52 accommodated in the cutter bin 30 and a first blade 53 fixedly accommodated in the cutter frame 22, and the cutter frame assembly 20 drives the first blade 53 to move and extend out of an outlet (not numbered) of the housing 10 so as to be exposed out of the housing 10. The housing 10 further defines a magazine hole (not numbered) for inserting and extracting the magazine 30, the magazine 30 is used for placing a plurality of blades 52 to be used, and the blades 52 to be used are fixed in the magazine 30 by the elastic metal piece 60. A groove 51 is provided on the back of each blade, a clamping portion 231 and a triggering portion 232 are formed on the elastic fixing member 23, the clamping portion 231 is matched with the groove 51 of the first blade 53 to clamp the first blade 53, and the triggering portion 232 is arranged on the back of the first blade 53.

Specifically, the elastic fixing member 23 includes a main body 233, an engaging portion 231, and a triggering portion 232, wherein the engaging portion 231 and the triggering portion 232 are both disposed perpendicular to the main body 233, the engaging portion 231 and the triggering portion 232 both extend along the thickness direction of the first blade 53, and the main body 233, the engaging portion 231, and the triggering portion 232 are integrally formed. The trigger 232 is disposed on the top side of the main body 233, the engaging portion 231 is disposed under the trigger 232, the trigger 232 and the engaging portion 231 are both formed by extending from the main body 233 toward the tool changing button 40, in this embodiment, the engaging portion 231 is substantially in a half-cylinder shape or a U-shaped interface column shape, the trigger 232 is in a flat plate shape, the engaging portion 231 and the trigger 232 are connected to each other, in other embodiments, the engaging portion 231 and the trigger 232 may not be connected to each other, but only the positions of the trigger 232 and the engaging portion 231 are disposed close to each other, so that the design can ensure that the movement of the trigger 232 is more efficiently transmitted to the engaging portion 231. Since the triggering portion 232 and the engaging portion 231 are located on the same side of the body portion 233 and the height of the triggering portion 232 is greater than the height of the engaging portion 231, the engaging portion 231 is disposed in the recess 51 of the first blade 53 and the triggering portion 232 is disposed on the ridge of the first blade 53. Since the length of the trigger 232 in the direction perpendicular to the body 233 is greater than the length of the engaging portion 231 in the direction perpendicular to the body 233, the engaging portion 231 is accommodated in the groove 51 of the first blade 53, and the trigger 232 exceeds the ridge of the first blade 53 in the thickness direction of the first blade 53, so that the tool changing button 40 is conveniently actuated on the trigger 232. In this embodiment, the engaging portion 231 includes a first engaging portion and a second engaging portion (not numbered), a first groove and a second groove (not numbered) are disposed on the ridge of the first blade 53, and the first engaging portion and the second engaging portion are respectively disposed in the first groove and the second groove to fix the first blade 53, so that the fixing strength is increased. The projection of the trigger 232 on the vertical surface of the main body 233 is located between the first engaging portion and the second engaging portion, which increases the stability of the trigger 232. The triggering portion 232 moves under the triggering of the tool changing button 40, and under the elastic action of the elastic fixing member 23, the first engaging portion and the second engaging portion move by a preset distance, and the first engaging portion and the second engaging portion are respectively out of contact with the first groove and the second groove of the first blade 53, so that the first blade 53 is disengaged from the tool rest assembly 20.

The trigger 232 is flat, the trigger 232 extends along the thickness direction of the first blade 53, and the extending end surface of the trigger 232 is a curved surface. Specifically, the extending end of the trigger 232 includes a first edge portion a, a third edge portion c and a second edge portion b connecting the first edge portion a and the third edge portion c, the first edge portion a is closer to the incision edge relative to the second edge portion b, the second edge portion b is closer to the incision edge relative to the third edge portion c, the first edge portion a and the third edge portion c are both disposed parallel to the main body 233, the second edge portion b extends obliquely relative to the main body 233, the distance from the first edge portion a to the main body 233 is smaller than the distance from the third edge portion c to the main body 233, and the connection between the second edge portion b and the third edge portion c is in a smooth arc shape.

The tool changing button 40 includes a base 44 and an operating part 41 extending from one side of the base 44, the first housing 11 is provided with a first groove for accommodating the tool changing button 40 and partially exposing the tool changing button outside the first housing 11, the operating part 41 protrudes from the first groove of the first housing 11 for user operation, and the size of the first groove in the horizontal direction is larger than that of the operating part 41 in the horizontal direction. The tool changing button 40 further includes a protrusion 43 extending from the other side of the base 44, the protrusion 43 and the operating portion 41 being located on opposite sides of the base 44, the protrusion 43 and the operating portion 41 being disposed perpendicular to the base 44. The extending end surface of the protruding portion 43 is a curved surface, the extending end of the protruding portion 43 includes a fourth edge portion d and a fifth edge portion e, the fourth edge portion d is closer to the knife edge relative to the fifth edge portion e, the fourth edge portion d is disposed parallel to the base portion 44, the fifth edge portion e extends from the fourth edge portion d toward the base portion 44 in an inclined manner, and a connection portion between the fourth edge portion d and the fifth edge portion e is in a smooth arc shape. The tool changing button 40 further comprises a first matching portion 45, the tool magazine 30 is provided with a second matching portion 32, the first matching portion 45 is matched with the second matching portion 32 to fix the tool magazine 30 in the shell 10, in this embodiment, the first matching portion 45 is a first stopping portion 45 extending from the base 44 towards the direction of the tool magazine 30, the second matching portion 32 is a second stopping portion 32 arranged on the inner wall of the tool magazine 30, when the tool changing button 40 is located at the original position, the first stopping portion 45 is matched with the second stopping portion 32 to prevent the tool magazine 30 from being separated from the shell 10 of the tool under the action of no external force, specifically, the first stopping portion 45 abuts against the bottom of the second stopping portion 32, and therefore the tool magazine 30 is prevented from moving downwards to be separated from the shell 10 of the tool under the action of no external force.

The top of the housing 10 of the cutting tool is provided with a sliding groove (not numbered in the figure), the sliding button 21 is exposed out of the housing 10 through the sliding groove, the housing 10 is provided with a plurality of tool rest positions at intervals along the extending direction of the sliding groove, the sliding button 21 is pushed, the sliding button 21 can push the tool rest 22 to move in the sliding groove, the sliding button 21 can be correspondingly clamped at different tool rest positions in the moving process, and the tool rest 22 drives the first blade 53 to move together in the housing 10 in the moving process, so that the first blade 53 extends out of the housing 10 or contracts in the housing 10. The cutter rest positions comprise an original cutter rest position, a first cutter rest position, a second cutter rest position and a cutter changing cutter rest position which are sequentially arranged, and the cutter changing cutter rest position is the cutter rest position closest to the cutter outlet. Specifically, when the first blade 53 is worn and needs to be replaced, the sliding button 21 is pushed to the tool changing holder position, and when the sliding button 21 is located at the tool changing holder position closest to the knife outlet, the first blade 53 extends out of the housing 10, at this time, the protruding portion 43 of the tool changing button 40 corresponds to the triggering portion 232 of the elastic fixing member 23 in the direction perpendicular to the sliding direction, specifically, the fourth edge portion d of the protruding portion 43 corresponds to the first edge portion a of the triggering portion 232 in the direction perpendicular to the sliding direction, and the fifth edge portion e of the protruding portion 43 corresponds to the second edge portion b of the triggering portion 232 in the direction perpendicular to the sliding direction. When the operating part 41 of the tool changing button 40 is operated to enable the tool changing button 40 to horizontally slide from the original position to the direction close to the tool magazine 30, the fourth edge d of the protruding part 43 is firstly abutted with the first edge a of the triggering part 232 and moves to the second edge b of the triggering part 232 along the first edge a of the triggering part 232, the fifth edge e of the protruding part 43 is firstly abutted with the second edge b of the triggering part 232 and moves to the third edge c of the triggering part 232 along the second edge b of the triggering part 232, the triggering part 232 is abutted by the protruding part 43 in the sliding process of the tool changing button 40, the triggering part 232 moves to the direction far away from the protruding part 43, under the elastic action of the elastic fixing part 23, the triggering part 232 drives the clamping part 231 to move and is separated from the contact with the groove 51 of the first blade 53, at this time, the first blade 53 can be taken out from the outlet in front of the shell 10, due to the matching of the first stopping portion 45 of the tool changing button 40 and the second stopping portion 32 of the tool magazine 30, the tool magazine 30 cannot be taken out under the action of external force, so that the tool magazine 30 is prevented from being separated from the housing 10 of the tool when the tool is used. In addition, the blade 52 to be used is ejected for use by the elastic metal sheet 60 provided in the magazine 30. When the slide button 21 is located at another tool rest position, the protrusion 43 of the tool changing button 40 is displaced from the trigger 232 of the elastic fixing member 23 in the direction perpendicular to the sliding direction, and at this time, the first blade 53 cannot be triggered to unlock by operating the tool changing button 40. When the tool holder 22 together with the elastic fixing member 23 moves to the tool-out position, the triggering portion 232 of the elastic fixing member 23 is opposite to the protrusion 43 of the tool-changing button 40, and specifically, the principle of unlocking the first blade 53 is that when the tool-changing button 40 slides in the horizontal direction toward the direction close to the magazine 30 under the action of an external force, the protrusion 43 of the tool-changing button 40 presses against the triggering portion 232 of the elastic fixing member 23 in the moving process, and the triggering portion 232 moves in the direction away from the protrusion 43, because the elastic fixing member 23 is an elastic element, the triggering portion 232 drives the engaging portion 231 to move a certain distance under the elastic action, and the engaging portion 231 is separated from the groove 51 of the first blade 53, so that the first blade 53 can be separated from the tool holder assembly 20, and at this time, the first blade 53 can be taken out from the housing 10 of the tool.

The lateral wall of the tool magazine 30 is provided with a first buckle structure 31, the lateral wall of the first shell 11 is provided with a second buckle structure (not shown), the tool magazine 30 is inserted into the shell 10, the lateral wall of the tool magazine 30 elastically deforms until the first buckle structure 31 and the second buckle structure are mutually in buckle fit, and the first buckle structure 31 and the second buckle structure are arranged to prevent the tool magazine 30 from being separated from the shell 10 of the tool under the action of no external force. In this embodiment, the first fastening structure 31 is a wedge-shaped fixture block, the second fastening structure is a clamping groove, that is, a wedge-shaped fixture block 31 is arranged on the outer side wall of the tool magazine 30, a clamping groove for accommodating the wedge-shaped fixture block 31 is correspondingly arranged on the inner side wall of the first housing 11, the wedge-shaped fixture block 31 is matched with the clamping groove, so that the tool magazine 30 is fixed in the housing 10 of the tool, and in order to facilitate pushing the wedge-shaped fixture block 31 into the clamping groove, an inclined surface is arranged at one end of the wedge; in other embodiments, the first locking structure 31 may be set as a locking groove, and the second locking structure may be set as a wedge-shaped locking block, which may be specifically set according to actual requirements.

After all of the spent blades 52 in the cartridge 30 have been used, the cartridge 30 may be removed, filled with the spent blades 52 in the cartridge 30, and then loaded into the housing 10 for subsequent use. Specifically, when the operation portion 41 of the tool changing button 40 is operated to enable the tool changing button 40 to horizontally slide from the original position to the direction far away from the tool magazine 30, the first stopping portion 45 of the tool changing button 40 is separated from the second stopping portion 32 of the tool magazine 30, at this time, due to the matching between the wedge-shaped fixture block 31 arranged on the outer side wall of the tool magazine 30 and the clamping groove arranged on the inner side wall of the first shell 11 of the tool, the tool magazine 30 cannot be separated from the shell 10 of the tool under the action of no external force; the tool magazine 30 can be removed from the housing 10 of the tool only under certain external forces. After the knife magazine 30 is filled with the standby blades 52, the knife magazine 30 is loaded into the shell 10 of the knife, and then the knife changing button 40 is horizontally slid to the original position, at this time, the first stopping portion 45 of the knife changing button 40 is matched with the second stopping portion 32 of the knife magazine 30 to prevent the knife magazine 30 from being separated from the shell 10 of the knife without external force.

In this embodiment, the tool changing button 40 is located in a position inside the tool spanning between the end of the tool magazine 30 close to the exit and the position of the elastic fixing member 23 where the tool changing button 40 unlocks the first blade 53 (when the sliding button 21 is located in the holder position closest to the exit), and the tool changing button 40 is arranged in a long shape, and two unlocking functions can be respectively realized by two operation actions, namely, horizontally sliding the tool changing button 40 in the direction close to the tool magazine 30 and horizontally sliding the tool changing button 40 in the direction away from the tool magazine 30. Specifically, when the tool holder 22 with the elastic fixing member 23 moves to the tool changing holder position, the tool changing button 40 horizontally slides towards the direction close to the tool magazine 30 to unlock the first blade 53 (the protrusion 43 presses against the trigger 232 to drive the engaging portion 231 to disengage from the groove 51 of the first blade 53), the tool changing button 40 horizontally slides towards the direction away from the tool magazine 30 to unlock the tool magazine 30 (the first stopping portion 45 of the tool changing button 40 disengages from the second stopping portion 32 of the tool magazine 30), and at this time, the wedge-shaped fixture block 31 of the tool magazine 30 is clamped on the housing 10 of the tool, and the tool magazine 30 can be operated to disengage from the housing 10 and be unloaded. When the tool post 22 with the elastic fixing member 23 moves to other tool post positions, the tool magazine 30 can only be unlocked by horizontally sliding the tool changing button 40 (the first stopping portion 45 of the tool changing button 40 is separated from the second stopping portion 32 of the tool magazine 30). The user can select different positions to unlock corresponding structures according to specific unlocking requirements. The unlocking requirements of different unlocking scenes are met by horizontally sliding the tool changing button 40, so that the unlocking structure in the tool is greatly simplified, the operation difficulty is reduced, and the manufacturing cost of the tool is reduced.

Example two: as shown in fig. 8 to 13, the present invention provides a replaceable blade tool, which comprises a housing 10, a slidable carriage assembly 20 disposed in the housing 10, and a cartridge 30 for placing a blade 52 to be used, wherein the cartridge 30 is removably mounted in the housing 10. The cutter further comprises an elastic tool changing button 40, the elastic tool changing button 40 is fixed on the shell 10, the shell 10 comprises a first shell 11 and a second shell 12, and a first groove (not numbered in the figure) used for containing the elastic tool changing button 40 and enabling part of the elastic tool changing button to be exposed out of the first shell 11 is arranged on the first shell 11. The tool holder assembly 20 comprises a sliding button 21, a tool holder 22 and an elastic fixing piece 23 fixed on the tool holder 22, wherein the elastic fixing piece 23 is fixed on the tool holder 22 through a metal elastic sheet 234. The cutter contains a plurality of blades, the blades comprise a plurality of standby blades 52 accommodated in the cutter bin 30 and a first blade 53 fixedly accommodated in the cutter frame 22, and the cutter frame assembly 20 drives the first blade 53 to move and extend out of an outlet (not numbered) of the housing 10 so as to be exposed out of the housing 10. The housing 10 further defines a magazine hole (not numbered) for inserting and extracting the magazine 30, the magazine 30 is used for placing a plurality of blades 52 to be used, and the blades 52 to be used are fixed in the magazine 30 by the elastic metal piece 60. A groove 51 is provided on the back of each blade, a clamping portion 231 and a triggering portion 232 are formed on the elastic fixing member 23, the clamping portion 231 is matched with the groove 51 of the first blade 53 to clamp the first blade 53, and the triggering portion 232 is arranged on the back of the first blade 53.

Specifically, the elastic fixing member 23 includes a main body 233, an engaging portion 231, and a triggering portion 232, wherein the engaging portion 231 and the triggering portion 232 are both disposed perpendicular to the main body 233, the engaging portion 231 and the triggering portion 232 both extend along the thickness direction of the first blade 53, and the main body 233, the engaging portion 231, and the triggering portion 232 are integrally formed. The trigger 232 is disposed on the top side of the main body 233, the engaging portion 231 is disposed under the trigger 232, and both the engaging portion 231 and the trigger 232 are integrally formed by extending from the main body 233 toward the tool changing button 40, in this embodiment, the engaging portion 231 is substantially in a half-cylinder shape or a U-shaped interface column shape, the trigger 232 is in a flat plate shape, and the engaging portion 231 and the trigger 232 are connected to each other, in other embodiments, the engaging portion 231 and the trigger 232 may not be connected to each other, but only the positions of the trigger 232 and the engaging portion 231 are disposed close to each other, so that the design can ensure that the movement of the trigger 232 is more efficiently transmitted to the engaging portion 231. Since the triggering portion 232 and the engaging portion 231 are located on the same side of the body portion 233 and the height of the triggering portion 232 is greater than the height of the engaging portion 231, the engaging portion 231 is disposed in the recess 51 of the first blade 53 and the triggering portion 232 is disposed on the ridge of the first blade 53. Since the length of the trigger 232 in the direction perpendicular to the body 233 is greater than the length of the engaging portion 231 in the direction perpendicular to the body 233, the engaging portion 231 is accommodated in the groove 51 of the first blade 53, and the trigger 232 exceeds the ridge of the first blade 53 in the thickness direction of the first blade 53, so that the elastic tool changing button 40 is configured to operate on the trigger 232. In this embodiment, the engaging portion 231 includes a first engaging portion and a second engaging portion (not numbered), a first groove and a second groove (not numbered) are disposed on the ridge of the first blade 53, and the first engaging portion and the second engaging portion are respectively disposed in the first groove and the second groove to fix the first blade 53, so that the fixing strength is increased. The projection of the trigger 232 on the vertical surface of the main body 233 is located between the first engaging portion and the second engaging portion, which increases the stability of the trigger 232. The triggering portion 232 moves under the triggering of the elastic tool changing button 40, and under the elastic action of the elastic fixing member 23, the first engaging portion and the second engaging portion move by a preset distance, and the first engaging portion and the second engaging portion are respectively out of contact with the first groove and the second groove of the first blade 53, so that the first blade 53 is disengaged from the tool rest assembly 20.

The elastic tool changing button 40 comprises a base 44, an operating part 41 and a protruding part 43, wherein the operating part 41 and the protruding part 43 extend from the base 44, the first shell 11 is provided with a first groove used for accommodating the elastic tool changing button 40 and enabling part of the elastic tool changing button to be exposed outside the first shell 11, the operating part 41 protrudes from the first groove of the first shell 11 so as to be convenient for a user to operate, and the size of the first groove in the horizontal direction is larger than that of the operating part 41 in the horizontal direction. The operation portion 41 includes a first operation portion 411, a second operation portion 412, and a connection portion 413 connecting the first operation portion 411 and the second operation portion 412, wherein the connection portion 413 is a U-shaped portion 413. The base 44 includes a first base 441 and a second base 442, the first base 441 is connected to the first operating portion 411, the second base 442 is connected to the second operating portion 412, the protruding portion 43 extends from the first base 441 toward the elastic fixing member 23, and the extending direction of the protruding portion 43 is opposite to the opening direction of the U-shaped portion 413. Elasticity tool change button 40 still includes first cooperation portion 45, sword storehouse 30 is equipped with second cooperation portion 32, first cooperation portion 45 cooperates in order to be fixed in the casing 10 with sword storehouse 30 with second cooperation portion 32, in this embodiment, first cooperation portion 45 is from second basal portion 442 towards the joint portion 45 of sword storehouse 30 direction horizontal extension, second cooperation portion 32 is the joint groove 32 of horizontal extension, the opening of joint groove 32 sets up towards elasticity tool change button 40 direction, when elasticity tool change button 40 is located home position, joint portion 45 cooperates with joint groove 32 in order to prevent that sword storehouse 30 from breaking away from the casing 10 of cutter under no exogenic action, in other embodiments, also can set up joint groove 32 in elasticity tool change button 40, joint portion 45 sets up in sword storehouse 30, specifically set up according to the implementation demand. The resilient tool change button 40 is a resilient plastic button.

The top of the housing 10 of the cutting tool is provided with a sliding groove (not numbered in the figure), the sliding button 21 is exposed out of the housing 10 through the sliding groove, the housing 10 is provided with a plurality of tool rest positions at intervals along the extending direction of the sliding groove, the sliding button 21 is pushed, the sliding button 21 can push the tool rest 22 to move in the sliding groove, the sliding button 21 can be correspondingly clamped at different tool rest positions in the moving process, and the tool rest 22 drives the first blade 53 to move together in the housing 10 in the moving process, so that the first blade 53 extends out of the housing 10 or contracts in the housing 10. The cutter rest positions comprise an original cutter rest position, a first cutter rest position, a second cutter rest position and a cutter changing cutter rest position which are sequentially arranged, and the cutter changing cutter rest position is the cutter rest position closest to the cutter outlet. Specifically, when the first blade 53 is worn and needs to be replaced, the sliding button 21 is pushed to the tool changing holder position, when the sliding button 21 is located at the tool changing holder position closest to the knife outlet, the first blade 53 extends out of the housing 10, at this time, the protruding portion 43 of the elastic tool changing button 40 corresponds to the triggering portion 232 of the elastic fixing member 23 in the direction perpendicular to the sliding direction, the first operating portion 411 of the elastic tool changing button 40 is pressed in the direction perpendicular to the sliding direction, the arrangement of the U-shaped portion 413 enables the first operating portion 411, the first base portion 441 and the protruding portion 43 to elastically deform, the first operating portion 411, the first base portion 441 and the protruding portion 43 move towards the triggering portion 232, the protruding portion 43 abuts against the triggering portion 232, the triggering portion 232 moves towards the direction away from the protruding portion 43, under the elastic action of the elastic fixing member 23, the triggering portion 232 drives the engaging portion 231 to move and separate from the contact with the groove 51 of the first blade 53, at this time, the first blade 53 can be taken out from the blade outlet on the front surface of the housing 10, and when the first operating part 411 is released after being pressed, the first operating part 411 returns to the original position first groove under the action of the elastic force, so that the user can press and trigger next time. Due to the matching of the clamping part 45 of the elastic tool changing button 40 and the clamping groove 32 of the tool bin 30, the tool bin 30 cannot be taken out under the action of external force, so that the tool bin 30 is prevented from being separated from the shell 10 of the tool when the tool is used. In addition, the blade 52 to be used is ejected for use by the elastic metal sheet 60 provided in the magazine 30. When the slide button 21 is located at another tool rest position, the protrusion 43 of the elastic tool changing button 40 and the trigger 232 of the elastic fixing member 23 are staggered in the direction perpendicular to the sliding direction, and at this time, pressing the first operation portion 411 of the elastic tool changing button 40 cannot trigger the unlocking of the first blade 53. When the tool holder 22 together with the elastic fixing member 23 moves to the tool-ejecting position, the triggering portion 232 of the elastic fixing member 23 is opposite to the protrusion 43 of the elastic tool-changing button 40, and specifically, the principle of unlocking the first blade 53 is that when the first operating portion 411 of the elastic tool-changing button 40 is triggered by an external force, the protrusion 43 of the elastic tool-changing button 40 first contacts with the triggering portion 232 of the elastic fixing member 23, then the protrusion 43 abuts against the triggering portion 232, the triggering portion 232 moves in a direction away from the protrusion 43, because the elastic fixing member 23 is an elastic element, the triggering portion 232 drives the engaging portion 231 to move a certain distance under the elastic action, the engaging portion 231 is separated from the groove 51 of the first blade 53, so that the first blade 53 is separated from the tool holder assembly 20, and at this time, the first blade 53 can be taken out from the housing 10 of the tool.

The lateral wall of the tool magazine 30 is provided with a first buckle structure 31, the lateral wall of the first shell 11 is provided with a second buckle structure (not shown), the tool magazine 30 is inserted into the shell 10, the lateral wall of the tool magazine 30 elastically deforms until the first buckle structure 31 and the second buckle structure are mutually in buckle fit, and the first buckle structure 31 and the second buckle structure are arranged to prevent the tool magazine 30 from being separated from the shell 10 of the tool under the action of no external force. In this embodiment, the first fastening structure 31 is a wedge-shaped fixture block, the second fastening structure is a clamping groove, that is, a wedge-shaped fixture block 31 is arranged on the outer side wall of the tool magazine 30, a clamping groove for accommodating the wedge-shaped fixture block 31 is correspondingly arranged on the inner side wall of the first housing 11, the wedge-shaped fixture block 31 is matched with the clamping groove, so that the tool magazine 30 is fixed in the housing 10 of the tool, and in order to facilitate pushing the wedge-shaped fixture block 31 into the clamping groove, an inclined surface is arranged at one end of the wedge; in other embodiments, the first locking structure 31 may be set as a locking groove, and the second locking structure may be set as a wedge-shaped locking block, which may be specifically set according to actual requirements.

After all of the spent blades 52 in the cartridge 30 have been used, the cartridge 30 may be removed, filled with the spent blades 52 in the cartridge 30, and then loaded into the housing 10 for subsequent use. Specifically, the elastic tool changing button 40 horizontally slides from the original position to the direction far away from the tool magazine 30 by operating the second operating part 412 of the elastic tool changing button 40, and the clamping part 45 of the elastic tool changing button 40 is separated from the clamping groove 32 of the tool magazine, at this time, due to the matching between the wedge-shaped clamping block 31 arranged on the outer side wall of the tool magazine 30 and the clamping groove arranged on the inner side wall of the first shell 11 of the tool, the tool magazine 30 cannot be separated from the shell 10 of the tool under the action of no external force; the tool magazine 30 can be removed from the housing 10 of the tool only under certain external forces. After the knife magazine 30 is filled with the standby blades 52, the knife magazine 30 is loaded into the housing 10 of the knife, and then the elastic tool changing button 40 is horizontally slid to the original position by operating the second operating portion 412, at this time, the clamping portion 45 of the elastic tool changing button 40 is matched with the clamping groove 32 of the knife magazine 30 to prevent the knife magazine 30 from being separated from the housing 10 of the knife without external force.

One of the two of elasticity tool changing button 40 and sword storehouse 30 sets up joint portion 45, and the other one of the two of elasticity tool changing button 40 and sword storehouse 30 sets up with joint portion 45 complex joint groove 32, and the elasticity tool changing button 40 of horizontal slip, joint portion 45 break away from with the joint groove 32 relative slip is fixed with the joint of release sword storehouse 30 and elasticity tool changing button 40. In this embodiment, the clamping portion 45 is disposed on the elastic tool changing button 40, the clamping portion 45 is an integrated structure formed by extending from the second operating portion 412 toward the tool magazine 30, the clamping groove 32 is disposed at a corresponding position of the tool magazine 30, after the tool magazine 30 is completely inserted into the housing 10 of the tool, the elastic tool changing button 40 slides horizontally, the clamping portion 45 of the elastic tool changing button 40 is clamped and fixed with the clamping groove 32 of the tool magazine 30, and the tool magazine 30 cannot be taken out under an external force, so that the tool magazine 30 is prevented from being separated from the housing 10 of the tool when the tool is used; in other embodiments, the clamping portion 45 can be disposed on the tool magazine 30, and the clamping groove 32 is disposed on the elastic tool changing button 40, which can be specifically disposed according to actual requirements.

In the present embodiment, the elastic tool changing button 40 is located in a position inside the tool, which spans between one end of the tool magazine 30 close to the exit and a position where the elastic fixing member 23 is located when the elastic tool changing button 40 unlocks the first blade 53 (when the sliding button 21 is located in one of the tool magazine positions closest to the exit), the elastic tool changing button 40 is arranged in a long shape, and two unlocking functions can be respectively realized by two operation actions, that is, by pressing the first operation portion 411 of the elastic tool changing button 40 and by operating the second operation portion 412, the elastic tool changing button 40 horizontally slides in a direction away from the tool magazine 30. Specifically, when the tool holder 22 moves to the tool changing tool holder position together with the elastic fixing member 23, the first blade 53 can be unlocked by pressing the first operation portion 411 (the protrusion 43 abuts against the trigger portion 232 to drive the engaging portion 231 to disengage from the groove 51 of the first blade 53), the elastic tool changing button 40 horizontally slides in the direction away from the tool magazine 30 by operating the second operation portion 412, the tool magazine 30 can be unlocked (the engaging portion 45 disengages from the engaging groove 32 of the tool magazine 30), the wedge-shaped fixture block 31 of the tool magazine 30 is clamped on the housing 10 of the tool, and the tool magazine 30 can be operated to disengage from the housing 10 and unloaded. When the tool post 22 with the elastic fixing member 23 moves to other tool post positions, the tool magazine 30 can be unlocked only by operating the second operating portion 412 to horizontally slide the elastic tool changing button 40 (the clamping portion 45 is disengaged from the clamping groove 32 of the tool magazine 30). The user can select different positions to unlock corresponding structures according to specific unlocking requirements. The unlocking requirements of different unlocking scenes are realized by two operation modes of pressing the first operation part 411 and operating the second operation part 412 to enable the elastic tool changing button 40 to horizontally slide, so that the unlocking structure in the cutter is simplified to a great extent, the operation difficulty is reduced, and the manufacturing cost of the cutter is reduced.

In the present invention, the blade-replaceable tool includes a tool changing button 40 fixed on a housing 10, the tool changing button 40 includes an operating portion 41 exposed outside the housing 10, a protrusion 43 and a first matching portion 45, the tool changing button 40 is integrally formed, an elastic fixing member 23 is fixed on a tool holder 22, the elastic fixing member 23 is formed with an engaging portion 231 for engaging with a groove 51 of a ridge of a first blade 53 to lock the first blade 53, the tool holder 22 can drive the first blade 53 to move in the housing 10, the elastic fixing member 23 is further formed with a triggering portion 232, by operating the operating portion 41, the convex portion 43 can be made to press against the trigger portion 232, the trigger portion 232 moves under the pressing of the convex portion 43, under the elastic action of the elastic fixing piece 23, the triggering part 232 drives the clamping part 231 to move, the clamping part 231 is separated from the contact with the groove 51 of the first blade 53, and at the moment, the first blade 53 can be taken out; on the other hand, the magazine 30 is provided with the second engaging portion 32, and the first engaging portion 45 can be engaged with or disengaged from the second engaging portion 32 by operating the operating portion 41, thereby functioning to lock the magazine 30 or unlock the magazine 30. Therefore, compared with the prior art, the tool changing device has the advantages that the tool changing button 40 is used for controlling the unlocking of the first blade 53 and the locking and unlocking of the tool bin 30, the structure is simple, the stability is good, and the cost is low.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express the embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. The utility model provides a cutter of removable blade, includes the casing, sets up slidable knife rest assembly on the casing, set up in first blade on the knife rest assembly and be used for placing the sword storehouse of blade for use, the cutter still includes tool changing button, tool changing button install in the casing, knife rest assembly includes sliding button, knife rest and fixed the elastic fixing spare of first blade, elastic fixing spare is fixed in on the knife rest, knife rest assembly drives first blade removes and stretches out a knife edge of casing is in order to expose outside the casing, the last trigger part that sets up of elastic fixing spare under tool changing button's the trigger, trigger part removes so that elastic fixing spare unblock first blade, its characterized in that: the tool changing button comprises an operating part and a first matching part, the tool bin is provided with a second matching part, the operating part enables the tool changing button to slide towards the direction close to the tool bin, the first matching part is matched with the second matching part to fix the tool bin in the shell, the operating part enables the tool changing button to slide towards the direction far away from the tool bin, and the first matching part is separated from the second matching part.

2. The blade-replaceable tool according to claim 1, wherein the tool changing button further comprises a base, the first engaging portion is a first stopping portion extending from the base toward the magazine, the second engaging portion is a second stopping portion disposed on an inner wall of the magazine, and the first stopping portion abuts against a bottom of the second stopping portion.

3. The replaceable blade tool of claim 2 wherein the first stop is a unitary structure extending from the base in a direction toward the magazine.

4. The cutting tool with the replaceable blade as claimed in claim 1, wherein the tool changing button comprises a base, the first matching portion is a clamping portion extending from the base to the direction of the tool magazine, the second matching portion is a clamping groove formed in the tool magazine, and an opening of the clamping groove is arranged towards the direction of the tool changing button.

5. The replaceable insert cutting tool of claim 4 wherein the snap-fit portion is a unitary structure extending from the base portion in a direction toward the cartridge.

6. The replaceable blade tool of claim 2, wherein the tool changing button further comprises a protrusion extending from the base, the protrusion extending from the base in a direction toward the elastic fixing member, and an extending end surface of the protrusion is a curved surface.

7. The replaceable insert cutting tool of claim 6 wherein the extended distal end of the protruding portion includes a fourth edge portion and a fifth edge portion, the fourth edge portion is closer to the exit edge than the fifth edge portion, the fifth edge portion extends from the fourth edge portion toward the base in an inclined manner, and a junction of the fourth edge portion and the fifth edge portion is in a rounded arc shape.

8. The replaceable blade tool of claim 1, wherein the resilient fixing member includes a body portion, the trigger portion extends from the body portion in a direction toward the tool changing button, and an extended distal end surface of the trigger portion is curved.

9. The replaceable blade tool of claim 8 wherein the extended distal end of the trigger portion includes a first edge portion, a third edge portion, and a second edge portion connecting the first edge portion and the third edge portion, the first edge portion being closer to the exit edge than the third edge portion, the first edge portion being closer to the base than the third edge portion.

10. The replaceable blade tool of claim 1, wherein the tool changer button is located in the tool at a position spanning between an end of the tool magazine near the exit edge and a position of the resilient mount when the tool changer button unlocks the first blade.

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